IMAGE ENCODING/DECODING METHOD AND APPARATUS

摘要

The present invention relates to an image encoding/decoding method. The present invention provides an image encoding apparatus comprising: an intra-prediction mode determining unit for determining an encoder prediction mode which is an intra-prediction mode for the present block, using a candidate intra-prediction enabling mode set containing an intra-prediction mode candidate which is predictable by the image encoding apparatus from among intra-prediction mode candidates; an encoding unit for encoding a residual block obtained by subtracting a block from the prediction block obtained by predicting the present block in accordance with the encoder prediction mode; a mode information generating unit for generating mode information in accordance with whether or not the image encoding apparatus may predict the encoder prediction mode; and an encoding data generating unit for generating encoding data containing the encoded residual block and mode information. The present invention selectively encodes mode information for the intra-prediction mode, and reduces the bit rate of encoded data obtained by encoding images, thereby improving image compression efficiency and the quality of compressed images.